diff --git a/.babelrc b/.babelrc
new file mode 100644
index 0000000..720efb3
--- /dev/null
+++ b/.babelrc
@@ -0,0 +1,5 @@
+{
+  "plugins": [
+    "transform-async-to-generator"
+  ]
+}
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index 4abc84e..0c88bfb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,8 @@
+#
+node_modules
 
-.idea/functional.es.iml
+# for IntelliJ IDE
+.idea/*.iml
 .idea/markdown-navigator.xml
 .idea/markdown-navigator/profiles_settings.xml
 .idea/misc.xml
@@ -7,6 +10,7 @@
 .idea/vcs.xml
 .idea/watcherTasks.xml
 .idea/workspace.xml
-articles/ES6, 함수형 프로그래밍, 비동기, 동시성 프로그래밍/html/.DS_Store
-articles/ES6, 함수형 프로그래밍, 비동기, 동시성 프로그래밍/.DS_Store
+
+.DS_Store
+
 *.zip
diff --git a/functional.es.js b/functional.es.js
index 136b17c..85cbed9 100644
--- a/functional.es.js
+++ b/functional.es.js
@@ -1,3 +1,5 @@
+let root = {};
+
 !function() {
   const curry2 = f => (..._) => _.length < 2 ? (..._2) => f(..._, ..._2) : f(..._);
 
@@ -382,7 +384,6 @@
 
   const sel = baseSel(' > ');
 
-  const root = typeof global == 'object' ? global : window;
   root.Functional = {
     curry2, flip,
     then, identity, noop,
@@ -399,4 +400,10 @@
     negate, complement, not, isAny, isUndefined,
     each, log,
   };
-} ();
\ No newline at end of file
+} ();
+
+if (typeof global == 'object') {
+  module.exports = root.Functional || {};
+} else {
+  window.Functional = root.Functional;
+}
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..b42f48a
--- /dev/null
+++ b/package.json
@@ -0,0 +1,35 @@
+{
+  "name": "functional.es",
+  "version": "1.0.0",
+  "description": "ES6 +, Functional Programming, Asynchronous, Concurrent Programming",
+  "main": "functional.es.js",
+  "directories": {
+    "test": "test"
+  },
+  "scripts": {
+    "test": "mocha -R spec --require babel-register test/**/*.js"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/Functional-JavaScript/FunctionalES.git"
+  },
+  "keywords": [
+    "es6+",
+    "functional",
+    "programming",
+    "javascript"
+  ],
+  "author": "idy@marpple.com",
+  "license": "",
+  "bugs": {
+    "url": "https://github.com/Functional-JavaScript/FunctionalES/issues"
+  },
+  "homepage": "https://github.com/Functional-JavaScript/FunctionalES#readme",
+  "devDependencies": {
+    "babel-cli": "^6.26.0",
+    "babel-plugin-transform-async-to-generator": "^6.24.1",
+    "babel-register": "^6.26.0",
+    "chai": "^4.1.2",
+    "mocha": "^5.1.0"
+  }
+}
diff --git a/test/common.spec.js b/test/common.spec.js
new file mode 100644
index 0000000..936d49a
--- /dev/null
+++ b/test/common.spec.js
@@ -0,0 +1,66 @@
+const expect = require('chai').expect
+const { curry2, pipe } = require('../functional.es')
+
+describe('[ curry2 ]', function () {
+  it('curry2 는 함수를 반환한다.', () => {
+    const adder = curry2((a, b) => a + b)
+    expect(adder).to.be.a('function')
+  })
+
+  it('curry2 를 통해 반환된 함수는 인자가 1개이면 함수를, 1개보다 많으면 해당 함수를 실행한다.', () => {
+    const adder = curry2((a, b) => a + b)
+    const addWith5 = adder(5)
+
+    expect(addWith5).to.be.a('function')
+    expect(addWith5(3)).to.eql(8)
+    expect(addWith5(5)).to.eql(10)
+  })
+
+  it('curry2 에 함수가 아닌 인자를 입력하는 경우 TypeError 가 발생할 수 있다.', () => {
+    const unknown = curry2('abc')
+
+    expect(unknown).to.be.a('function')
+    expect(unknown(1)).to.be.a('function')
+    expect(() => unknown(1)(2)).to.throw(TypeError, 'Function.prototype.apply was called on abc, which is a string and not a function')
+    unknown(1)(2)
+  })
+})
+
+describe('[ pipe ]', function () {
+  const add1 = a => a + 1
+  const add1P = a => new Promise(resolve => setTimeout(() => resolve(a + 1), 1000))
+  const mul2 = a => a * 2
+
+  it('pipe 는 인자로 받은 함수들을 순차적으로 실행하는 함수를 반환한다.', () => {
+    const f = pipe(add1, mul2)
+
+    expect(f).to.be.a('function')
+    expect(f(1)).to.eql(4)
+    expect(f(2)).to.eql(6)
+  })
+
+  it('pipe 에 promise 를 반환하는 비동키 함수가 포함되는 경우 pipe 함수는 인자로 들어온 함수를 순차적으로 실행하지만 promise 를 반환한다.', async () => {
+    this.timeout(2000)
+
+    const fP = pipe(add1P, mul2)
+    expect(fP).to.be.a('function')
+
+    const p1 = fP(1)
+    const p2 = fP(2)
+
+    expect(p1).to.be.a('Promise')
+    expect(p2).to.be.a('Promise')
+
+    await p1.then(result => expect(result).to.eql(4))
+    await p2.then(result => expect(result).to.eql(6))
+  })
+
+  it('pipe 중간에 함수가 아닌 인자가 들어가는 경우 TypeError 가 발생할 수 있다.', () => {
+    const f = pipe(add1, mul2, 3)
+
+    expect(f).to.be.a('function')
+    expect(() => f(1)).to.throw(TypeError, 'f is not a function')
+    expect(() => f(2)).to.throw(TypeError, 'f is not a function')
+    f(1)
+  })
+})